Brake-chain drum.



W. S. ATWOOD.

BRAKE CHAIN DRUM.

APPLICATION FILED NOV. 9, 1914.

Patented Mar. 14, 1916.

if/firesses by a cotter or bolt passing through the ape.

- WILLIAM s. A'rwoon, or MONTREAL, oceans; CANADA.-

a snann-criiiinnnnivn i To all whom z'tfmay comm.-

Be it known that LWILLiAM S. A'rwoo1 acitizen of the Dominion of'Canada,and

resident of the city of Montreahinthe Province of Quebec and DominionofOanada, Y haveinvented certain new and useful Improvements inBrakekChain Drums, {of whichthe following is a full, clear, and exact"description.

- This invention relates to improvement'sinbrake shaft chain drums, andthe object' lis to provide a drum which may be inserted in leaving agreat amount of play. I

A further object is to provide a chain a solid cast bracketwithoutthenecessity of drum made in two parts, either one ofwhich may be renewedindependently of the other. Various other objects and advantages will beapparent from the following description.

The device consists essentially of a drum divided lntermediate its endsvon a plane.

which intersects the axis of the drum at an angle other than 90 degrees.7 parts carries avradial lug for the attachment of the brake chain.

Referring more particularly to the drawings:Figure 1 is a frontelevation of the drum in position in a solid cast bracket.

, Fig. 2 is a view similar to Fig.1, illustrating The lower end of thedrum is provided with 1' the method of inserting or removing the drum.Fig. 3 shows a slightly modified form of drum. q

Referring more particularly to the drawings, 5 designates a solidcastbrakeshaft bracket, that is to say, a bracket formed with top andbottom apertures, and'not with jaws or removable drum holding numbers.This bracket is provided with top and bottom apertures 6 and 7 forthereception of the ends of the drum. The drum is composed of upper andlower parts 8 and 9, separated as shown at 10 on a plane which does notintersect the axis of the drum at an angle of 90 I degrees. Each ofthenumbers may be provided with a flange 11, designed to hold the chainagainst jamming between the ends of the drum or bracket. One of themembers, for example 8, is provided with a radially projecting lug 12over which the end link of the brake chain may be slipped and securederture 13. j k

The drum is preferably designed for cooperation with a square brakeshaft, and is therefore provided withv a square bore 14:.

I s eeiaeaaon of Letters Patent.

, Applieationfiled November 9, 1914. Serial No. 871,053.

One of these types of brackets.

. Patented Mar. 14, iaie.

-' tin aperture 15 for the insertion ofa cotter pin or bolt to holdthedrumto the shaft,

'andalso to "holdthe same against creeping upward in the bracket, aswill be readily understood from the drawing. v I

It will be noted that the distancebetween the outside faces of theflanges 11 is slightly. less than 'the'distance between the top andbottom of the bracket, so that the drum has a certain up and down playin the bracket when not held by the pin15, this play being equal tothespace16. WVhenitisfdesired 'to insert the drum the upper portionthereof is inserted in the upper part of the bracket and held with "its,flange "11 abutting the bracket", as clearly 1 shown in Fig. 2'. Thelower part ofthe" drum is then slipped into the lower part of thebracket in an angular position and moved to vertical position in linewith the under the lug 12. The reversal of the plane of separation thuspermits the portions 8 to be made much smaller. I

The advantages of this invention are obvious. The drum may be insertedin solid cast brackets as easily as in forked or other Most of thebreakages which will occur will be in or near the lug 12, so that bydividing the drum it is possible to replace a broken lug without theexpense of replacing the entire drum. The parts of the drum willpreferably be malleable castings, so that they maybe made at no apepreciable greater cost than the drums at present in use, no machiningbeing required the two at the line of separation between drum parts. 7

Having thus described my invention, what I claim is 1' I 1. A brakechain drum formed in'two independentlyseparable parts, separableintermediate the ends of the drum.

2. A brake chain drum formed in two independently separableparts,separable adjacent drum ends on a plane inclined with respect to thedrum axis.

pe s funee en and e brak cha i r brake A- brak y ha n drum ie imed in,tw

' b h 11 li rm d'f nte al with the *shoriter part.

ipr fis abu in i e m i 1 1 11 end 1 mswatchme-- r 8. A brake chain drumifQIlIlZlQd g f' aiplue ty of tu r m m ers abu tin e v i e he nt a hedrum l nds, t e abu t c lf s d m mber bein rm transmit rqtary. moticnfro m que nuemb rito thebther, and a chain attachipg lug ied by n vfs dprtse i 9 x sin qe my 3 teine o b w d um -i "m d win W fii ese t s sh. ywas a n gd tpcy With a square brake shaft of achain drum,

formed of a plurality of parts, each having afsquare 'bdre fcrfthreception of the brake" whereby said parts are held in aline.- "meritand against relative revolution.

10. In a brake chain drum, the combina titiH-With a brake shaft and ab'racliet of a chair} ,fqrrried of a plurality of parts abutting one ahcther intermediate the drum ends and held axially in line Icy/ said brake.shafifihe ab li lllg a es of fia d. P-w bfl -et aeged t t nsmi ro ary mieni 911 Barbie the .q htlkiind c ain at r ct-hin -eembi atien, i'hl'ewmQ 0M d m dw l e lQl-Q mQQl l W i in itwie w i separating at suchan angle that one fthe pantsimey bveim ved reeli wn n z r 'e :ticn i1 1,pr from the @bracket. I

-1 WhemQ-f :1 hav wane e y hand, itheipreesmcele twew ees es- 11- ;de 0iheehe a e descr bed 1 math rela i ely t-b the e ie d rc glS n ciseie t e71 9 91 31 24? 1 121 191 1 1

